Year: 2025
Type: preprint
Abstract: The first Euclid Quick Data Release, Q1, comprises 63.1 sq deg of the Euclid Deep Fields (EDFs) to nominal wide-survey depth. It encompasses visible and near-infrared space-based imaging and spectroscopic data, ground-based photometry in the u, g, r, i and z bands, as well as corresponding masks. Overall, Q1 contains about 30 million objects in three areas near the ecliptic poles around the EDF-North and EDF-South, as well as the EDF-Fornax field in the constellation of the same name. The purpose of this data release -- and its associated technical papers -- is twofold. First, it is meant to inform the community of the enormous potential of the Euclid survey data, to describe what is contained in these data, and to help prepare expectations for the forthcoming first major data release DR1. Second, it enables a wide range of initial scientific projects with wide-survey Euclid data, ranging from the early Universe to the Solar System. The Q1 data were processed with early versions of the processing pipelines, which already demonstrate good performance, with numerous improvements in implementation compared to pre-launch development. In this paper, we describe the sky areas released in Q1, the observations, a top-level view of the data processing of Euclid and associated external data, the Q1 photometric masks, and how to access the data. We also give an overview of initial scientific results obtained using the Q1 data set by Euclid Consortium scientists, and conclude with important caveats when using the data. As a complementary product, Q1 also contains observations of a star-forming area in Lynd's Dark Nebula 1641 in the Orion~A Cloud, observed for technical purposes during Euclid's performance-verification phase. This is a unique target, of a type not commonly found in Euclid's nominal sky survey.
Source: arXiv (Cornell University)
Authors: Euclid Collaboration, Aussel, H., Tereno, I., Schirmer, M., Alguero, G., Altieri, B., Balbinot, E., de Boer, T., Casenove, P., Corcho-Caballero, P., Furusawa, H., Furusawa, J., Hudson, M. J., Jahnke, K., Libet, G., Macias-Perez, J., Masoumzadeh, N., Mohr, J. J., Odier, J., Scott, D., Vassallo, T., Kleijn, G. Verdoes, Zacchei, A., Aghanim, N., Amara, A., Andreon, S., Auricchio, N., Awan, S., Azzollini, R., Baccigalupi, C., Baldi, M., Balestra, A., Bardelli, S., Basset, A., Battaglia, P., Belikov, A. N., Bender, R., Biviano, A., Bonchi, A., Bonino, D., Branchini, E., Brescia, M., Brinchmann, J., Camera, S., Cañas-Herrera, G., Capobianco, V., Carbone, C., Cardone, V. F., Carretero, J., Casas, S., Castander, F. J., Castellano, M., Castignani, G., Cavuoti, S., Chambers, K. C., Cimatti, A., Colodro-Conde, C., Congedo, G., Conselice, C. J., Conversi, L., Copin, Y., Courbin, F., Courtois, H. M., Cropper, M., Cuby, J. -G., Da Silva, A., da Silva, R., Degaudenzi, H., de Jong, J. T. A., De Lucia, G., Di Giorgio, A. M., Dinis, J., Dolding, C., Dole, H., Douspis, M., Dubath, F., Duncan, C. A. J., Dupac, X., Dusini, S., Ealet, A., Escoffier, S., Fabricius, M., Farina, M., Farinelli, R., Faustini, F., Ferriol, S., Fotopoulou, S., Fourmanoit, N., Frailis, M., Franceschi, E., Franzetti, P., Galeotta, S., George, K., Gillard, W., Gillis, B., Giocoli, C., Gómez-Alvarez, P., Gracia-Carpio, J., Granett, B. R., Grazian, A., Grupp, F., Guzzo, L., Gwyn, S., Haugan, S. V. H., Herent, O., Hoar, J., Hoekstra, H., Holliman, M. S., Holmes, W., Hook, I. M., Hormuth, F., Hornstrup, A., Hudelot, P., Ilić, S., Jhabvala, M., Joachimi, B., Keihänen, E., Kermiche, S., Kiessling, A., Kubik, B., Kuijken, K., Kümmel, M., Kunz, M., Kurki-Suonio, H., Lahav, O., Boulc'h, Q. Le, Brun, A. M. C. Le, Mignant, D. Le, Liebing, P., Ligori, S., Lilje, P. B., Lindholm, V., Lloro, I., Mainetti, G., Maino, D., Maiorano, E., Mansutti, O., Marcin, S., Marggraf, O., Markovic, K., Martinelli, M., Martinet, N., Marulli, F., Massey, R., Maurogordato, S., McCracken, H. J., Medinaceli, E., Mei, S., Melchior, M., Mellier, Y., Meneghetti, M., Merlin, E., Meylan, G., Mora, A., Moresco, M., Morris, P. W., Moscardini, L., Mourre, S., Nakajima, R., Neissner, C., Nichol, R. C., Niemi, S. -M., Nightingale, J. W., Nutma, T., Padilla, C., Paltani, S., Pasian, F., Peacock, J. A., Pedersen, K., Percival, W. J., Pettorino, V., Pires, S., Polenta, G., Pollack, J. E., Poncet, M., Popa, L. A., Pozzetti, L., Racca, G. D., Raison, F., Rebolo, R., Renzi, A., Rhodes, J., Riccio, G., Rix, H. -W., Romelli, E., Roncarelli, M., Rossetti, E., Rusholme, B., Saglia, R., Sakr, Z., Sánchez, A. G., Sapone, D., Sartoris, B., Sauvage, M., Schewtschenko, J. A., Schneider, P., Scodeggio, M., Secroun, A., Sefusatti, E., Seidel, G., Seiffert, M., Serrano, S., Simon, P., Sirignano, C., Sirri, G., Skottfelt, J., Mancini, A. Spurio, Stanco, L., Steinwagner, J., Surace, C., Tallada-Crespí, P., Tavagnacco, D., Taylor, A. N., Teplitz, H. I., Tessore, N., Toft, S., Toledo-Moreo, R., Torradeflot, F., Tsyganov, A., Tutusaus, I., Valentijn, E. A., Valenziano, L., Valiviita, J., Veropalumbo, A., Wang, Y., Weller, J., Williams, O. R., Zamorani, G., Zerbi, F. M., Zucca, E., Allevato, V., Ballardini, M., Blake, R. P., Bolzonella, M., Bozzo, E., Burigana, C., Cabanac, R., Calabrese, M., Cappi, A., Di Ferdinando, D., Vigo, J. A. Escartin, Gabarra, L., Hartley, W. G., Huertas-Company, M., Martín-Fleitas, J., Matthew, S., Maturi, M., Mauri, N., Metcalf, R. B., Pezzotta, A., Pöntinen, M., Porciani, C., Risso, I., Scottez, V., Sereno, M., Tenti, M., Viel, M., Wiesmann, M., Akrami, Y., Alvi, S., Andika, I. T., Anselmi, S., Archidiacono, M., Atrio-Barandela, F., Avila, S., Bergamini, P., Bertacca, D., Bethermin, M., Bisigello, L., Blanchard, A., Blot, L., Böhringer, H., Borgani, S., Borlaff, A. S., Brown, M. L., Bruton, S., Buitrago, F., Calabro, A., Calderone, G., Quevedo, B. Camacho, Caro, F., Carvalho, C. S., Castro, T., Charles, Y., Cogato, F., Conseil, S., Cooray, A. R., Costanzi, M., Cucciati, O., Davini, S., De Paolis, F., Desprez, G., Díaz-Sánchez, A., Diaz, J. J., Di Domizio, S., Diego, J. M., Dimauro, P., Duc, P. -A., Enia, A., Fang, Y., Ferguson, A. M. N., Ferrari, A. G., Finoguenov, A., Fontana, A., Fontanot, F., Franco, A., García-Bellido, J., Gasparetto, T., Gavazzi, R., Gaztanaga, E., Giacomini, F., Gianotti, F., Gonzalez, A. H., Gozaliasl, G., Gruppuso, A., Guidi, M., Gutierrez, C. M., Hall, A., Hernández-Monteagudo, C., Hildebrandt, H., Hjorth, J., Jacobson, J., Joudaki, S., Kajava, J. J. E., Kang, Y., Kansal, V., Karagiannis, D., Kiiveri, K., Kirkpatrick, C. C., Kruk, S., Lacasa, F., Laigle, C., Lattanzi, M., Brun, V. Le, Graet, J. Le, Legrand, L., Lembo, M., Lepori, F., Leroy, G., Lesci, G. F., Lesgourgues, J., Leuzzi, L., Liaudat, T. I., Loureiro, A., Magliocchetti, M., Magnier, E. A., Mancini, C., Mannucci, F., Maoli, R., Martins, C. J. A. P., Maurin, L., McPartland, C. J. R., Melin, J. -B., Migliaccio, M., Miluzio, M., Monaco, P., Montoro, A., Moretti, C., Morgante, G., Murray, C., Nadathur, S., Naidoo, K., Navarro-Alsina, A., Nesseris, S., Nicastro, L., Oguri, M., Passalacqua, F., Paterson, K., Patrizii, L., Pisani, A., Potter, D., Quai, S., Radovich, M., Reimberg, P., Rocci, P. -F., Rodighiero, G., Rollins, R. P., Sacquegna, S., Sahlén, M., Sanders, D. B., Sarpa, E., Scarlata, C., Schaye, J., Schneider, A., Schultheis, M., Sciotti, D., Scognamiglio, D., Sellentin, E., Shankar, F., Smith, L. C., Soubrie, E., Stanford, S. A., Tanidis, K., Tao, C., Testera, G., Tewes, M., Teyssier, R., Tosi, S., Troja, A., Tucci, M., Valieri, C., Venhola, A., Vergani, D., Vernizzi, F., Verza, G., Vielzeuf, P., Walton, N. A., Weaver, J. R., Wilde, J., Zalesky, L.
Institutions: Commissariat à l'Énergie Atomique et aux Énergies Alternatives, CEA Paris-Saclay - Etablissement de Saclay, Astrophysique, Instrumentation et Modélisation, CEA Paris-Saclay, Laboratoire de Physique Subatomique et de Cosmologie, Centre National d'Études Spatiales, Institut d'Astrophysique Spatiale, European Space Agency, Institut de Physique des 2 Infinis de Lyon, Laboratoire d’Astrophysique de Marseille, Centre de physique des particules de Marseille, Institut d'Astrophysique de Paris, Laboratoire de Physique des 2 Infinis Irène Joliot-Curie, Institut de Recherche en Astrophysique et Planétologie, Institut National de Physique Nucléaire et de Physique des Particules, Centre de Calcul de l’Institut National de Physique Nucléaire et de Physique des Particules, Université Paris Diderot, Centre Pierre Binétruy, University of California, Berkeley, CEA Cadarache, Galaxies, Etoiles, Physique et Instrumentation, Laboratoire d’Etudes du Rayonnement et de la Matière en Astrophysique et Atmosphères, Université de Lille, Laboratoire Univers et Théories, Observatoire astronomique de Strasbourg, Institut de Recherche sur les Lois Fondamentales de l'Univers, Département de Physique des Particules, Centre National de la Recherche Scientifique, Institut de Physique Théorique
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4414903200